Find the amplitude and the period of the function?

Question

y=-5 sin(2x)

Answer 1

The general form of the sin function is y=asin(bx+c)+d where a is the amplitude, 2pi/b is the period, -c/b is the horizontal shift and d is the vertical shift. In your problem y=-5sin(2x), a=-5 and b=2. You should be able to find your answer now

Answer 2

The amplitude is the coefficient of the trig function.

 

Period = 2π / frequency

 

frequency = 2

Answer 3

y = a sin bx, a represents the amplitude, 2π/b represents the period.

Can you answer the question?